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Performance of high resolution decoding with Multi-Anode Microchannel Array detectorsThe Multi-Anode Microchannel Array (MAMA) is a microchannel plate based photon counting detector with applications in ground-based and space-based astronomy. The detector electronics decode the position of each photon event, and the decoding algorithm that associates a given event with the appropriate pixel is determined by the geometry of the anode array. The standard MAMA detector has a spatial resolution set by the anode array of 25 microns, but the MCP pore resolution exceeds this. The performance of a new algorithm that halves the pixel spacing and improves the pixel spatial resolution is described. The new algorithm does not degrade the pulse-pair resolution of the detector and does not require any modifications to the detector tube. Measurements of the detector's response demonstrate that high resolution decoding yields a 60 percent enhancement in spatial resolution. Measurements of the performance of the high resolution algorithm with a 14 micron MAMA detector are also described. The parameters that control high resolution performance are discussed. Results of the application of high resolution decoding to speckle interferometry are presented.
Document ID
19930050446
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Kasle, David B.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Horch, Elliott P.
(Stanford Univ. CA, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1993
Publication Information
Publication: In: Ultraviolet technology IV; Proceedings of the Meeting, San Diego, CA, July 20, 21, 1992 (A93-34426 13-35)
Publisher: Society of Photo-Optical Instrumentation Engineers
Subject Category
Instrumentation And Photography
Accession Number
93A34443
Funding Number(s)
CONTRACT_GRANT: NAS5-29389
CONTRACT_GRANT: NAS5-30387
Distribution Limits
Public
Copyright
Other

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